Sampling method and sampling device

Abstract

The invention provides a sampling method, which comprises a step of recognizing the shape of a to-be-sampled area. A sampling method is selected according to the shape, and the sampling method is used for sampling the to-be-sampled area. According to the sampling method provided by the invention, a proper sampling method is selected through telling an organ shape, and the dose distribution after optimization is more uniform.

Description

technical field

[0001] The invention relates to the field of radiotherapy, in particular to a method and device for sampling images. Background technique

[0002] Radiation therapy is a method to treat malignant tumors by using radiation such as α, β, γ rays produced by radioactive isotopes and x-rays, electron beams, proton beams and other particle beams produced by various x-ray therapy machines or accelerators.

[0003] Due to the high energy of the beam, normal cells are also affected while tumor cells are killed. Radiation therapy is planned in order to minimize damage to normal tissue. In radiotherapy planning, doctors need to give prescriptions and treatment plans, and physicists should outline organs and tumor locations, as well as gross tumor volume (Gross Tumor Volume, GTV), clinical target volume (Clinical Target volume, CTV) and Plan the treatment volume (PlanningTarget Volume, PTV) and other target areas, and then create the beam (Beam) and sub-field (Beam seg...

Examples

Embodiment Construction

[0037] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0038] Many specific details are set forth in the following description to facilitate a full understanding of the present invention, but the present invention can also be implemented in other ways than described here, so the present invention is not limited by the specific embodiments disclosed below.

[0039] In radiation therapy, high doses of radiation are required to be delivered to the tumor target area as much as possible to minimize the damage to organs at risk. Therefore, when formulating radiation therapy plans, the region of interest includes the tumor target area and organs at risk, and the dose in the tumor target area is required to be as high as possible, and the dose in the organs at risk is required to be as low as possi...

technical field

[0001] The invention relates to the field of radiotherapy, in particular to a method and device for sampling images. Background technique

[0002] Radiation therapy is a method to treat malignant tumors by using radiation such as α, β, γ rays produced by radioactive isotopes and x-rays, electron beams, proton beams and other particle beams produced by various x-ray therapy machines or accelerators.

[0003] Due to the high energy of the beam, normal cells are also affected while tumor cells are killed. Radiation therapy is planned in order to minimize damage to normal tissue. In radiotherapy planning, doctors need to give prescriptions and treatment plans, and physicists should outline organs and tumor locations, as well as gross tumor volume (Gross Tumor Volume, GTV), clinical target volume (Clinical Target volume, CTV) and Plan the treatment volume (PlanningTarget Volume, PTV) and other target areas, and then create the beam (Beam) and sub-field (Beam seg...

Examples

Embodiment Construction

[0037] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0038] Many specific details are set forth in the following description to facilitate a full understanding of the present invention, but the present invention can also be implemented in other ways than described here, so the present invention is not limited by the specific embodiments disclosed below.

[0039] In radiation therapy, high doses of radiation are required to be delivered to the tumor target area as much as possible to minimize the damage to organs at risk. Therefore, when formulating radiation therapy plans, the region of interest includes the tumor target area and organs at risk, and the dose in the tumor target area is required to be as high as possible, and the dose in the organs at risk is required to be as low as possi...

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